The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 03, 2001
Filed:
Aug. 13, 1999
Applicant:
Inventors:
Jean-Marc Aiache, Clermont-Ferrand, FR;
Pascale Gauthier, Clermont-Ferrand, FR;
Joël Bougaret, Lanta, FR;
Assignee:
Pierre Fabre Medicament, Boulogne-Billancourt, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 9/46 ; A61K 9/16 ;
U.S. Cl.
CPC ...
A61K 9/46 ; A61K 9/16 ;
Abstract
The invention concerns multilayer microspheres containing an acid substance, a basic substance, and a water-soluble isolating agent which, when it dissolves in water, after almost instant effervescence, brings about a homogeneous dispersion of active principal(s) which is present in the acid and basic substances. The invention also concerns a method for preparing such microspheres by rotational granulation on a fluid air bed associated with a system of tangential spraying of the wetting liquid.